Baking-oven



W. H. BEANES.

BAKING OVEN.

APPLICATION FILED AuG.24, 1920.

Patented oet. 25, 1921..A

In@ emfzz@ [XH if KC.

BAKING-OVEN.

Specication of Letters Patent.

Patented oet. 25, taai.

Application l'ed August 24, 1920. Serial No. 405,733.

To all whom t may concern:

Be it known that I, IVARWICK HENRY BEANES, a subject of the King ofGreat Britain and Ireland, residing at Westwood Works, Peterborough, inthe county of Northants, England, have invented certain new and usefulImprovements Relating to Baking-Ovens, of which the following is aspecification.

This invention relates to baking ovens, for bread making and otherpurposes, of the type comprising steam pipes forming tubular heatingelements and a traveling,

y or a large amount of heat or both immediately after they are carriedinto the oven and to moderate the temperature or quantity or both as theloaves travel from such region to the discharge end or outlet of theoven, while in other cases the high temperature or quantity or both maybe required at another portion of the baking period. The object of thisinvention is to provide for the heating of the oven in such manner aswill insure the said temperature and quantity graduations.

' The invention comprises the combination with an oven having acontinuous and moving sole or baking plate, of a series of independentfurnaces 'or fire-grates each having a group of tubular heattransmitting elements associated therewith, each of the said furnaceswith its group of tubes being arranged for the heating of a particularportion or region of the oven or baking chamber.

Referring to the accompanying sheet of explanatory drawings Figure 1 isa sectional elevation and Fig. 2 a sectional plan representing an ovenfor bread baking constructed in accordance with this invention.

Fig. 3 is a sectional end view of the oven and one of its furnaces.

The same reference letters in the different views indicate the same orsimilar parts.

In the illustrated application of the invention, the series ofindependent furnaces or ire-grates as a are arranged along one side ofthe oven b. The furnace nearest to the front or charging end c of theoven and adapted for the heating of the first or high temperature regionhereinbefore referred to, is of larger heating capacity relatively tothe region or portion of the oven heated by said furnace, than thefurnace or furnaces for the heating of the succeeding regions 0fl theoven or baking chamber. Where three or more furnaces are employed theymay all vary in size or capacity, the smallestin heating capacity beingpreferably the one nearest to the rear or discharge end d of the oven.In like manner the number of tubes e employed with the furnaces variesaccording to the capacity of the latter and to the required temperatureto be attained and maintained in the respective regions or portions ofthe oven served by the respective groups of tubes.

In the oven illustrated the respective heating zones or regions areindicated by the reference letters A B C D and the dotted linesybetweenFigs. 1 and 2. The portion A, nearest the front or charging end of theoven, is the hot zone or zone of maximum heating, while the portion.l D,nearest the rear or discharging end of the oven is the zone of minimumheating. The portions B and C are the intermediate zones wherein theheating effect is graded between the maximum in zone A and the minimumin zone D.

The pipes or tubes e may be disposed both over and under the upperv oractive length or run of the endless sole plate or conveyer f. Such upperand active length of the conveyer travels in the direction shown by thearrow above Fig. 1. Tubes may also be disposed beneath the lower orreturn length of the said conveyer to insure that it shall be warmenough for the reception of the loaf or dough portions placed thereon atthe front or charging end c of said means comprising a series ofindependthe oven. y ent furnaces ranged along the chamber and Havingthus described my invention what tubl'llar elements projecting into saidfur- I claim as new and desire to secure by naces and disposed in groupsof varying 5 Letters Patent is heating capacities in the respectivezones of 15 In baking ovens, the combination with a the chamber, as setforth. i continuous baking chamber and an endless In testimony whereof Ihave signed my conveyer extending through said chamber, name to thisspecification. X of means for imparting diierential heating 10 effectsin different zones of the said chamber, WARWICK HENRY BEANES.

